[A case of advanced gastric cancer that responded to docetaxel with low-dose 5-FU and cisplatin combination chemotherapy after becoming chemoresistant to M-FLP].

We report a case of advanced gastric cancer that responded to docetaxel with low-dose 5-FU and cisplatin combination chemotherapy after becoming chemoresistant to M-FLP. A 52-year-old male was diagnosed with type 3 gastric cancer of angulus (poorly differentiated adenocarcinoma) with left neck, Virchow, mediastinal and abdominal lymph nodes metastases. The patient was treated with 5 courses of M-FLP (MTX + 5-FU + LV + CDDP), and the effect of this therapy was PR, but the tumor was chemoresistant to the sixth course of this therapy. After 7 courses of M-FLP, docetaxel (TXT) with low-dose FP (5-FU + CDDP) was administered to the patient as second-line chemotherapy. After 2 courses of TXT with low-dose FP, the gastric cancer and metastatic lymph nodes were remarkably reduced and the effect of this therapy was PR. The toxic events were anemia (grade 2) and leukopenia (grade 3), which were treated with G-CSF. CDDP and 5-FU based regimens are considered as the first-line chemotherapy for metastatic advanced gastric cancer in Japan; however, a second-line chemotherapy has not been established. As in this case, a TXT based regimen is effective and well tolerated therapy as a second-line chemotherapy for metastatic gastric cancer after prior exposure to CDDP and 5-FU.